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Chemistry · 2024 · 1 Feb · Shift 1

30 questions from this JEE Main paper

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2024 · 1 Feb · Shift 1
Chemistry

Chemistry · 2024 · 1 Feb · Shift 1

30 questions from this JEE Main paper

Redox Reactions2 questions Thermodynamics1 questions Aldehydes Ketones and Carboxylic Acids2 questions Coordination Compounds2 questions Practical Organic Chemistry2 questions Structure of Atom2 questions Basics of Organic Chemistry4 questions Solutions1 questions Compounds Containing Nitrogen2 questions Chemical Bonding and Molecular Structure4 questions Haloalkanes and Haloarenes1 questions Biomolecules1 questions P Block Elements2 questions Electrochemistry1 questions Some Basic Concepts of Chemistry1 questions Ionic Equilibrium1 questions Chemical Kinetics and Nuclear Chemistry1 questions

Q1.Which of the following reactions are disproportionation reactions? (A) $Cu^{+} \to Cu^{2 +} + Cu$ (B) $3 MnO_{4}^{2 -} + 4 H^{+} ⟶ 2 MnO_{4}^{-} + MnO_{2} + 2 H_{2} O$ …
Chemistry · Redox Reactions · MCQ
Q2.Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :
Chemistry · Thermodynamics · MCQ
Q3.Identify $A$ and $B$ in the following sequence of reaction Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q4.Which of the following complex is homoleptic?
Chemistry · Coordination Compounds · MCQ
Q5.In Kjeldahl's method for estimation of nitrogen, $CuSO_{4}$ acts as :
Chemistry · Practical Organic Chemistry · MCQ
Q6.Given below are two statements : Statement (I) : Potassium hydrogen phthalate is a primary standard for standardisation of sodium hydroxide solution. Statement (II) : In this titration phenolphthalein can be used as indicator. In the light…
Chemistry · Practical Organic Chemistry · MCQ
Q7.In case of isoelectronic species the size of $F^{-}, Ne$ and $Na^{+}$ is affected by :
Chemistry · Structure of Atom · MCQ
Q8.Ionic reactions with organic compounds proceed through : (A) homolytic bond cleavage (B) heterolytic bond cleavage (C) free radical formation (D) primary free radical (E) secondary free radical Choose the correct answer from the options…
Chemistry · Basics of Organic Chemistry · MCQ
Q9.Which of the following compound will most easily be attacked by an electrophile?
Chemistry · Basics of Organic Chemistry · MCQ
Q10.Given below are two statements : Statement (I) : A solution of $[Ni (H_{2} O)_{6}]^{2 +}$ is green in colour. Statement (II) : A solution of $[Ni (CN)_{4}]^{2 -}$ is…
Chemistry · Coordination Compounds · MCQ
Q11.We have three aqueous solutions of $NaCl$ labelled as ' $A$ ', ' $B$ ' and ' $C$ ' with concentration $0.1 M$ , $0.01 M$ and $0.001 M$ , respectively. The value of van 't Hoff…
Chemistry · Solutions · MCQ
Q12.Given below are two statements : Statement (I) : The $NH_{2}$ group in Aniline is ortho and para directing and a powerful activating group. Statement (II) : Aniline does not undergo Friedel-Craft's reaction (alkylation and…
Chemistry · Compounds Containing Nitrogen · MCQ
Q13.According to the wave-particle duality of matter by de-Broglie, which of the following graph plot presents most appropriate relationship between wavelength of electron $(λ)$ and momentum of electron $(p)$ ?
Chemistry · Structure of Atom · MCQ
Q14.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): $PH_{3}$ has lower boiling point than $NH_{3}$ . Reason (R) : In liquid state $NH_{3}$ molecules…
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q15.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Haloalkanes react with KCN to form alkyl cyanides as a main product while with $AgCN$ form isocyanide as…
Chemistry · Haloalkanes and Haloarenes · MCQ
Q16.If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is :
Chemistry · Biomolecules · MCQ
Q17.In acidic medium, $K_{2} Cr_{2} O_{7}$ shows oxidising action as represented in the half reaction: $Cr_{2} O_{7}^{2 -} + XH^{+} + Ye^{⊖} \to 2 A + ZH_{2} O$ …
Chemistry · Redox Reactions · MCQ
Q18.Given below are two statements : Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. In the light of the above statements, choose the most…
Chemistry · Compounds Containing Nitrogen · MCQ
Q19.Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q20.Arrange the bonds in order of increasing ionic character in the molecules. $LiF$ , $K_{2} O, N_{2}, SO_{2}$ and $ClF_{3}$ :
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q21.The number of white coloured salts, among the following is (a) $SrSO_{4}$ (b) $Mg (NH_{4}) PO_{4}$ (c) $BaCrO_{4}$ (d) $Mn (OH)_{2}$ (e) $PbSO_{4}$ (f) $PbCrO_{4}$ (g) $AgBr$ …
Chemistry · P Block Elements · Numerical
Q22.Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is . Includes diagram
Chemistry · Basics of Organic Chemistry · Numerical
Q23.The potential for the given half cell at is (-) $\times 1 0^{- 2} V$ $2 H_{(aq)}^{+} + 2 e^{-} ⟶ H_{2} (g) [H^{+}] = 1 M, P_{H_{2}} = 2 atm$ …
Chemistry · Electrochemistry · Numerical
Q24.Among the following oxides of p-block elements, number of oxides having amphoteric nature is . $Cl_{2} O_{7}, CO, PbO_{2}, N_{2} O, NO, Al_{2} O_{3}, SiO_{2}, N_{2} O_{5}, SnO_{2}$ …
Chemistry · P Block Elements · Numerical
Q25.Consider the following reaction : $3 PbCl_{2} + 2 (NH_{4})_{3} PO_{4} \to Pb_{3} (PO_{4})_{2} + 6 NH_{4} Cl$ If $PbCl_{2}$ of $PbCl_{2}$ is mixed with…
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q26.The number of molecules/ion/s having trigonal bipyramidal shape is . $PF_{5}, BrF_{5}, PCl_{5}, [Pt Cl_{4}]^{2 -}, BF_{3}, Fe (CO)_{5}$
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q27.The lowest oxidation number of an atom in a compound $A_{2} B$ is -2 . The number of electrons in its valence shell is .
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q28. $K_{a}$ for $CH_{3} COOH$ is $1.8 \times 1 0^{- 5}$ and $K_{b}$ for $NH_{4} OH$ is $1.8 \times 1 0^{- 5}$ . The $pH$ of ammonium acetate solution will be …
Chemistry · Ionic Equilibrium · Numerical
Q29.Number of optical isomers possible for 2-chlorobutane .
Chemistry · Basics of Organic Chemistry · Numerical
Q30.The ratio of $\frac{^{14} C}{^{12} C}$ in a piece of wood is $\frac{1}{8}$ part that of atmosphere. If half life of $^{14} C$ is 5730 years, the age of wood sample is years.
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical